<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
 
  <div id="app">
   
    {{ msg }}
    {{ isShow? '哇塞大美女':'你是个好姑娘' }}
    {{  2+4*9*2 }}
    {{ parseInt('1.234') }}
   
  </div>
  <script src="./vue.js"></script>
  <script>
   
    // options对象
    const vm = new Vue({
   
      el: '#app',
      data: {
        msg: '你好vue',
        isShow: true
      }
    })
    
  </script>
</body>
</html>